<template>
  <div id="app">
    <el-card shadow="always">
      <el-form :inline="true" size="medium" :model="studentSearch" class="demo-form-inline">
      <!--条件查询-->
      <el-form-item >
        <el-input v-model="studentSearch.sname" placeholder="学生姓名"></el-input>
      </el-form-item>
        <el-form-item >
          <el-input v-model="studentSearch.addr" placeholder="学生住址"></el-input>
        </el-form-item>
      <el-form-item >
        <el-select v-model="studentSearch.cid" placeholder="所在班级">
          <el-option label="所有班级" value="0"></el-option>
          <el-option :label="c.cname" :value="c.cid" v-for="c in classesList" :key="c.cid"></el-option>
        </el-select>
      </el-form-item>
      <el-form-item>
        <el-button type="primary" icon="el-icon-search"  plain @click="search">查询</el-button>
      </el-form-item>
      </el-form>
      <el-table
          :data="studentList"
          style="width: 100%">
        <el-table-column
            label="学号"
            align="center"
            prop="sid"
            width="180"/>
        <el-table-column
            label="姓名"
            prop="sname"
            align="center"/>
        <el-table-column
            label="性别"
            prop="sex"
            align="center"/>
        <el-table-column
            label="年龄"
            prop="age"
            align="center"/>
        <el-table-column
            label="住址"
            prop="addr"
            align="center"/>
        <el-table-column
            label="所在班级"
            prop="cname"
            align="center"/>
        <el-table-column label="操作" align="center">
          <template slot-scope="scope">
            <el-button
                size="mini"
                @click="handleEdit(scope.$index, scope.row)">编辑</el-button>
            <el-button
                size="mini"
                type="danger"
                @click="handleDelete(scope.$index, scope.row)">删除</el-button>
          </template>
        </el-table-column>
      </el-table>
      <!--分页导航面板-->
      <el-pagination
          @size-change="handleSizeChange"
          @current-change="handleCurrentChange"
          :current-page="page"
          :page-sizes="[5, 10, 15, 20]"
          :page-size="pageSize"
          layout="total, sizes, prev, pager, next, jumper"
          :total="total">
      </el-pagination>
    </el-card>
  </div>
</template>

<script>
import studentApi from "@/api/student"
import classesApi from "@/api/classes"
export default {
  data() {
    return {
      studentList: [],
      page: 1,        // 当前面
      pageSize: 5,    // 每页显示记录条数
      total: 100,     // 总记录数
      studentSearch:{}, // 查询条件对象
      classesList:[],   // 所有班级

    }
  },
  created() {
    // this.findStudents()
    // this.findByPage()
    this.search()
    this.findAllClasses()
  },
  methods: {

    async findStudents() {
      const {data:res} = await studentApi.findAllStudents()
      console.log(res)
      if (data.code === 200) {
        this.studentList = res.data.list
      }
    },

    async findByPage() {
      const {data:res} = await studentApi.findByPage(this.page,this.pageSize)
      console.log(res)
      if (res.code === 200) {
        this.studentList = res.data.pr.rows
        this.total = res.data.pr.total
      }
    },

    async findAllClasses() {
      const {data:res} = await classesApi.findAllClasses()
      console.log(res)
      if (res.code === 200) {
        this.classesList = res.data.list
      }
    },

    async search(){
      const {data:res} = await studentApi.search(this.page,this.pageSize,this.studentSearch)
      console.log(res)
      if (res.code === 200) {
        this.studentList = res.data.pr.rows
        this.total = res.data.pr.total
      }
    },

    handleSizeChange(val) {
      this.pageSize = val
      // this.findByPage()
      this.search()
      console.log(`每页 ${val} 条`);
    },

    handleCurrentChange(val) {
      this.page = val
      // this.findByPage()
      this.search()
      console.log(`当前页: ${val}`);
    },
    handleEdit(index, row) {
      console.log(index, row);
    },
    handleDelete(index, row) {
      console.log(index, row);
    }
  }
}
</script>

<style>

  #app{
    display: flex;
    justify-content: center;
  }
  .el-card{
    width: 90%;
  }
  .el-pagination{
    margin-top: 20px;
    text-align: right;
  }
</style>
